java把金額轉換成漢字大寫金額

class MoneyFormat{  
	 private final String [] pattern ={"零","壹","貳","叄","肆","伍","陸","柒","捌","玖"};  
	 private final String [] cPattern ={"","拾","佰","仟","萬","拾","佰","仟","億"};  
	 private final String [] cfPattern = {"","角","分"};  
	 private final String ZEOR = "零";  
	 public MoneyFormat(){  
	     System.out.println("run...");  
	    
	 }   
	   
	 public String format(String moneyString){  
	  int dotPoint = moneyString.indexOf("."); //判斷是否爲小數  
	  String moneyStr;        
	  if(dotPoint != -1){  
	   moneyStr = moneyString.substring(0,moneyString.indexOf("."));  
	  }  
	  else{  
	   moneyStr = moneyString;  
	  }  
	  StringBuffer fraction = null;   //小數部分的處理,以及最後的yuan.  
	  StringBuffer ms = new StringBuffer();   
	  for(int i = 0;i < moneyStr.length();i++){  
	   ms.append(pattern[moneyStr.charAt(i) - 48]); //按數組的編號加入對應大寫漢字  
	  }  
	    
	  int cpCursor = 1;  
	  for(int j = moneyStr.length() - 1;j > 0;j--){  
	   ms.insert(j,cPattern[cpCursor]);   //在j以後加字符,不影響j對原字符串的相對位置  
	              //只是moneyStr.length()不斷增長  
	              //insert(j,"string")就在j位置處插入,j=0時爲第一位  
	   cpCursor = cpCursor == 8?1:cpCursor + 1;    //億位以後從新循環  
	  }  
	    
	    
	  while(ms.indexOf("零拾") != -1){  //當十位爲零時用一個"零"代替"零拾"  
	            //replace的起始於終止位置  
	   ms.replace(ms.indexOf("零拾"),ms.indexOf("零拾") + 2,ZEOR);  
	  }  
	  while(ms.indexOf("零佰") != -1){  //當百位爲零時,同理  
	   ms.replace(ms.indexOf("零佰"),ms.indexOf("零佰") + 2,ZEOR);  
	  }  
	  while(ms.indexOf("零仟") != -1){  //同理  
	   ms.replace(ms.indexOf("零仟"),ms.indexOf("零仟") + 2,ZEOR);  
	  }  
	  while(ms.indexOf("零萬") != -1){  //萬需保留，中文習慣  
	   ms.replace(ms.indexOf("零萬"),ms.indexOf("零萬") + 2,"萬");  
	  }  
	  while(ms.indexOf("零億") != -1){  //同上  
	   ms.replace(ms.indexOf("零億"),ms.indexOf("零億") + 2,"億");  
	  }  
	  while(ms.indexOf("零零") != -1){//有連續數位出現零，即有如下狀況，此時根據習慣保留一個零便可  
	   ms.replace(ms.indexOf("零零"),ms.indexOf("零零") + 2,ZEOR);  
	  }  
	  while(ms.indexOf("億萬") != -1){  //特殊狀況，如:100000000,根據習慣保留高位  
	   ms.replace(ms.indexOf("億萬"),ms.indexOf("億萬") + 2,"億");  
	  }  
	  while(ms.lastIndexOf("零") == ms.length()-1){  //當結尾爲零j，沒必要顯示,通過處理也只可能出現一個零  
		  if(ms.indexOf("零") == -1){
			  ms.delete(ms.lastIndexOf("零"),ms.lastIndexOf("零") + 1);  
		  }else{
			  break;
		  }
	  }  
	    
	    
	  int end;  
	  if((dotPoint = moneyString.indexOf(".")) != -1 ){ //是小數的進入   
	   String fs = moneyString.substring(dotPoint + 1,moneyString.length());  
	   if(fs.indexOf("00") == -1 || fs.indexOf("00") >= 2){//若前兩位小數全爲零，則跳過操做  
	    end = fs.length() > 2?2:fs.length();  //僅保留兩位小數  
	    fraction = new StringBuffer(fs.substring(0,end));  
	    for(int j = 0;j < fraction.length();j++){  
	     fraction.replace(j,j+1,this.pattern[fraction.charAt(j) - 48]); //替換大寫漢字  
	    }  
	    for(int i = fraction.length();i > 0;i--){  //插入中文標識  
	     fraction.insert(i,cfPattern[i]);  
	    }  
	    fraction.insert(0,"元");      //爲整數部分添加標識  
	   }  
	   else{  
	    fraction = new StringBuffer("元整");   
	   }  
	     
	  }  
	  else{  
	   fraction = new StringBuffer("元整");  
	  }  
	     
	  ms.append(fraction);         //加入小數部分  
	  return ms.toString();  
	 }  
	   
	   
	   
	   
	 public static void main(String [] ar){  
	  System.out.println(new MoneyFormat().format("10005022.123009"));  
	  System.out.println(new MoneyFormat().format("0.12"));  
	 }  
	}

上面是第一種方法,簡單些,容易理解,下面這種複雜點,兩個方法均可以實現這個功能

public class MoneyUtil {  
	  
    public static String[] chineseDigits = new String[] { "零", "壹", "貳", "叄", "肆", "伍", "陸", "柒", "捌", "玖"};  
  
    /** 
     * 把金額轉換爲漢字表示的數量，小數點後四捨五入保留兩位 
     * @param amount 
     * @return 
     */  
    public static String amountToChinese(double amount) {  
  
        if(amount > 99999999999999.99 || amount < -99999999999999.99)  
            throw new IllegalArgumentException("參數值超出容許範圍 (-99999999999999.99 ～ 99999999999999.99)！");  
  
        boolean negative = false;  
        if(amount < 0) {  
            negative = true;  
            amount = amount * (-1);  
        }  
  
        long temp = Math.round(amount * 100);  
        int numFen = (int)(temp % 10); // 分  
        temp = temp / 10;  
        int numJiao = (int)(temp % 10); //角  
        temp = temp / 10;  
        //temp 目前是金額的整數部分  
  
        int[] parts = new int[20]; // 其中的元素是把原來金額整數部分分割爲值在 0~9999 之間的數的各個部分  
        int numParts = 0; // 記錄把原來金額整數部分分割爲了幾個部分（每部分都在 0~9999 之間）  
        for(int i=0; ; i++) {  
            if(temp ==0)  
                break;  
            int part = (int)(temp % 10000);  
            parts[i] = part;  
            numParts ++;  
            temp = temp / 10000;  
        }  
  
        boolean beforeWanIsZero = true; // 標誌「萬」下面一級是否是 0  
  
        String chineseStr = "";  
        for(int i=0; i<numParts; i++) {  
  
            String partChinese = partTranslate(parts[i]);  
            if(i % 2 == 0) {  
                if("".equals(partChinese))  
                    beforeWanIsZero = true;  
                else  
                    beforeWanIsZero = false;  
            }  
  
            if(i != 0) {  
                if(i % 2 == 0)  
                    chineseStr = "億" + chineseStr;  
                else {  
                    if("".equals(partChinese) && !beforeWanIsZero)   // 若是「萬」對應的 part 爲 0，而「萬」下面一級不爲 0，則不加「萬」，而加「零」  
                        chineseStr = "零" + chineseStr;  
                    else {  
                        if(parts[i-1] < 1000 && parts[i-1] > 0) // 若是"萬"的部分不爲 0, 而"萬"前面的部分小於 1000 大於 0， 則萬後面應該跟「零」  
                            chineseStr = "零" + chineseStr;  
                        chineseStr = "萬" + chineseStr;  
                    }  
                }  
            }  
            chineseStr = partChinese + chineseStr;  
        }  
  
        if("".equals(chineseStr))  // 整數部分爲 0, 則表達爲"零元"  
            chineseStr = chineseDigits[0];  
        else if(negative) // 整數部分不爲 0, 而且原金額爲負數  
            chineseStr = "負" + chineseStr;  
  
        chineseStr = chineseStr + "元";  
  
        if(numFen == 0 && numJiao == 0) {  
            chineseStr = chineseStr + "整";  
        }  
        else if(numFen == 0) { // 0 分，角數不爲 0  
            chineseStr = chineseStr + chineseDigits[numJiao] + "角";  
        }  
        else { // 「分」數不爲 0  
            if(numJiao == 0)  
                chineseStr = chineseStr + "零" + chineseDigits[numFen] + "分";  
            else  
                chineseStr = chineseStr + chineseDigits[numJiao] + "角" + chineseDigits[numFen] + "分";  
        }  
  
        return chineseStr;  
  
    }  
  
  
    /** 
     * 把一個 0~9999 之間的整數轉換爲漢字的字符串，若是是 0 則返回 "" 
     * @param amountPart 
     * @return 
     */  
    private static String partTranslate(int amountPart) {  
  
        if(amountPart < 0 || amountPart > 10000) {  
            throw new IllegalArgumentException("參數必須是大於等於 0，小於 10000 的整數！");  
        }  
  
  
        String[] units = new String[] {"", "拾", "佰", "仟"};  
  
        int temp = amountPart;  
  
        String amountStr = new Integer(amountPart).toString();  
        int amountStrLength = amountStr.length();  
        boolean lastIsZero = true; //在從低位往高位循環時，記錄上一位數字是否是 0  
        String chineseStr = "";  
  
        for(int i=0; i<amountStrLength; i++) {  
            if(temp == 0)  // 高位已無數據  
                break;  
            int digit = temp % 10;  
            if(digit == 0) { // 取到的數字爲 0  
                if(!lastIsZero)  //前一個數字不是 0，則在當前漢字串前加「零」字;  
                    chineseStr = "零" + chineseStr;  
                lastIsZero = true;  
            }  
            else { // 取到的數字不是 0  
                chineseStr = chineseDigits[digit] + units[i] + chineseStr;  
                lastIsZero = false;  
            }  
            temp = temp / 10;  
        }  
        return chineseStr;  
    }  
  
   
  
    public static void main(String[] args) {  
  
        if(args.length == 0) {  
            System.out.println("轉換演示：");  
            System.out.println("-------------------------");  
            System.out.println("0000000000000000001.01: " + amountToChinese(0000000000000000001.01));  
            System.out.println("45689263.626: " + amountToChinese(45689263.626));  
            System.out.println("0.69457: " + amountToChinese(0.69457));  
            System.out.println("253.0: " + amountToChinese(253.0));  
            System.out.println("0: " + amountToChinese(0));  
            System.out.println("-------------------------");  
  
            System.out.println("999: " + amountToChinese(999));  
              
            //System.out.println(Long.MAX_VALUE);  
            //System.out.println(Long.MIN_VALUE);  
        }  
        else {  
            System.out.println("轉換結果：");  
            System.out.println(args[0] + ": " + amountToChinese(Double.parseDouble(args[0])));  
        }  
  
    }  
  
}